I only ran a practice game by myself to get a feel for her moves, but I will say this: I really enjoy Vault, It's an extremely satisfying move, and feels fun to position with, but I still have to see how it works against real people. Also, wouldn't it just bounce you back over the wall if you, say, vault to blue golem over the wall?
Her Q feels good with it's missile speed. but I'm afraid of what the blind will do.
Her W is nice for jungle exchanges, and her R... it's interesting.
I liked harrier's marking minions, it seems to target low health minions for last hitting, (for the most part) and that's very comfortable, and being able to force the mark with E makes it easy to control this "random" mark.
Also.. What does Valor say about Fiora? How could she? TELL ME.
1 last thing: in my first run through, I didn't notice any glaring bugs by herself so yay for that.